AT25128 Datasheet, PDF (1/12 Pages) ATMEL Corporation – SPI Serial EEPROMs

Features
Serial Peripheral Interface (SPI) Compatible
• _{Supports SPI Modes 0 (0,0) and 3 (1,1)}
•• _{Low Voltage and Standard Voltage Operation}
5.0 (VCC = 4.5V to 5.5V)
2.7 (VCC = 2.7V to 5.5V)
1.8 (VCC = 1.8V to 3.6V)
2.1 MHz Clock Rate
• _{32-Byte Page Mode}
•• _{Block Write Protection}
Protect 1/4, 1/2, or Entire Array
• Write Protect (WP) Pin and Write Disable Instructions for
Both Hardware and Software Data Protection
Self-Timed Write Cycle (5 ms Typical)
•• High Reliability
Endurance: 100,000 Cycles
Data Retention: 100 Years
Automotive Grade and Extended Temperature Devices Available
•• _{8-Pin PDIP, 14-pin, 16-pin JEDEC SOIC, and 20-Pin TSSOP Packages}
Description
The AT25128 provides 131,072 bits of serial electrically erasable programmable read
only memory (EEPROM) organized as 16,384 words of 8 bits each. The device is
optimized for use in many industrial and commercial applications where low power
and low voltage operation are essential. The AT25128 is available in space saving
8-pin PDIP, JEDEC SOIC, and 14-pin and 20-pin TSSOP packages.
Pin Configurations
(continued)
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
NC
DC
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
No Connect
Don’t Connect
8-Pin PDIP
CS 1
SO 2
WP 3
GND 4
8 VCC
7 HOLD
6 SCK
5 SI
14-Pin SOIC
CS 1
SO 2
NC 3
NC 4
NC 5
WP 6
GND 7
14 VCC
13 HOLD
12 NC
11 NC
10 NC
9 SCK
8 SI
16-Lead SOIC
CS 1
SO 2
NC 3
NC 4
NC 5
NC 6
WP 7
GND 8
16 VCC
15 HOLD
14 NC
13 NC
12 NC
11 NC
10 SCK
9 SI
20-Lead TSSOP*
NC
1
CS
2
SO
3
SO
4
NC
5
NC
6
WP
7
GND
8
DC
9
NC
10
20
NC
19
VCC
18
HOLD
17
HOLD
16
NC
15
NC
14
SCK
13
SI
12
DC
11
NC
* Note: Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.
SPI Serial
E²PROMs
128K (16384 x 8)
AT25128
Preliminary